I just bought a 'Super Ghost SIM' from eBay, it cost £4.32, including postage to the U.K.

It allows you to use 2 SIM cards, on any network (assuming your phone is unlocked). It's best feature is that you don't have to reboot your phone to switch SIM's, you just go into the 'Dual SIM Card' application, under Menu\Applications, and you have the option of both installed SIM cards (it displays their actual phone numbers in the list).

You select a SIM from the menu and it takes between 10-20 seconds to completely switch, which isn't too bad. It also has an option to auto-switch every 3-99 minutes, which is also very handy.

To fit the card into the N95, you have to do a little differently from the instructions, however.

The manual tells you to place one card into the SIM card slot on the phone, then install the battery, then lay the other SIM atop the battery, and replace the cover. If you do this on the N95, you'll have an extremely hard job getting the battery cover on without snapping it. Also, when you DO manage to get it on, the cover itself loses its 'flatness' and no longer sits flush with the phone casing. It looks like it may snap off very easily.

My method is this:

Install the SIM, and the ghost SIM into the SIM slot on phone (as per the instructions).

Then fold the second SIM over, UNDERNEATH the battery, and as low to the bottom of the phone as possible. Then slot the battery back in, and press it down hard, whilst sliding the cover back on.

This leaves the cover about 1mm out of line from the phone at one end, but it feels a lot more secure, and less likely to snap.

This is a great product and I just thought I'd share that with everyone, if anyone thinks this was a pointless or useless topic, then feel free to remove it, and I apologise

Sorry I haven't got pics at the moment... The only cam I have lying around is the N95, so can't really show people what I am talking about!

Also, another thing...

The Bluetooth Gamepad going on eBay (around £20-ish) works with the N95 if you download the driver from manufacturers website.

This is incredibly useful for emulators, as you can use the TV-out facility in the N95, and the controller is wireless, so you can have a truly portable NES/SNES/Gameboy/Megadrive/Gamegear/Coleco/etc etc etc.

HOWEVER:
When you slide the screen to horizontal mode, the keys get messed up on the D-Pad, and you have to re-configure them. I havent worked out how to stop this yet, lol

I presume I'd still have to unlock my phone for any of these multi-sim devices; I want to use Orange.fr in France, whatever network is best in Ireland and Spain and my UK Orange contract on my phone back home... Didn't even know you could stick multiple sims in a phone 'til I saw this thread though!